525535643 has 4 divisors (see below), whose sum is σ = 525860280. Its totient is φ = 525211008.

The previous prime is 525535607. The next prime is 525535691. The reversal of 525535643 is 346535525.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 525535643 - 2²² = 521341339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 525535597 and 525535606.

It is not an unprimeable number, because it can be changed into a prime (525532643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159878 + ... + 163131.

It is an arithmetic number, because the mean of its divisors is an integer number (131465070).

Almost surely, 2^525535643 is an apocalyptic number.

525535643 is a deficient number, since it is larger than the sum of its proper divisors (324637).

525535643 is a wasteful number, since it uses less digits than its factorization.

525535643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324636.

The product of its digits is 270000, while the sum is 38.

The square root of 525535643 is about 22924.5641834256. The cubic root of 525535643 is about 806.9885858735.

The spelling of 525535643 in words is "five hundred twenty-five million, five hundred thirty-five thousand, six hundred forty-three".